“Private jets already run on sustainable aviation fuel.”
Verdict: Sustainable aviation fuel (SAF) is real, certified for use in every business jet at blends of up to 50%, and available at a growing number of airports. But it was about 0.6–0.7% of global jet fuel in 2025, and business aviation's share is not obviously higher than airlines'. Most 'flies on SAF' claims are book-and-claim certificates — paying for SAF to be used somewhere — rather than SAF in the tank. Widely *available* in principle; widely *used*, no.
SAF is made from waste oils, agricultural residues and, eventually, synthetic processes combining captured carbon with green hydrogen. Blended with conventional Jet A, it is a drop-in fuel that requires no engine modification; Gulfstream, Bombardier, Dassault, Embraer and Textron have all flown on it, and Gulfstream ran a transatlantic G600 flight on 100% SAF in 2023.
The constraint is supply. IATA put global SAF production at about 1.9 million tonnes in 2025, roughly 0.6% of jet-fuel demand, and expects around 0.8% in 2026 as growth slows. Europe's ReFuelEU mandate requires a 2% blend at EU airports from 2025, rising to 6% in 2030, which is the first rule to force real volumes into business-jet tanks. In the US, availability depends on a handful of FBOs, mostly in California, with the fuel priced two to five times conventional Jet A.
Because physical SAF is scarce, the industry leans on book-and-claim: a customer pays the premium for SAF to be uplifted into the fuel system somewhere convenient, and receives a certificate for the emissions reduction. It is legitimate accounting, and it is also why a flight described as 'powered by SAF' may have burned ordinary kerosene.
Business aviation's stated goal is net-zero by 2050. It is, at present, at the very beginning of that road.
Sources: iata.org · nbaa.org · gulfstream.com
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